<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
		<style>
			.bluetext{
				color: blue;
			}
			.redtext{
				color: red;
			}
			
		</style>
	</head>
	<body>
		<div id="app">
		<h1>通过style属性控制样式</h1>
		<div style="color: red;">Hello world!</div>
		<h1>通过class属性控制样式</h1>
		<div class="bluetext">Hello vu!</div>
		<h1>使用vue来控制元素的class属性</h1>
		<div :class="textColor">Hello vu!</div>
		
		<button @click="change">切换</button>
		</div>
		<script>
		var app = Vue.createApp({
			data(){
				return {
					textColor:{
						redtext:true,
						bluetext:false
					}
					
					}
			},
			methods:{
				change:function()
				{
					this.textColor.redtext=!this.textColor.redtext
					this.textColor.bluetext=!this.textColor.bluetext
				}
			}
		});
		
		var vm = app.mount("#app")
		</script>
	</body>
</html>
